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Diffstat (limited to 'src/mesh/assimp-master/code/AssetLib/glTF/glTFAsset.h')
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1 files changed, 0 insertions, 1017 deletions
diff --git a/src/mesh/assimp-master/code/AssetLib/glTF/glTFAsset.h b/src/mesh/assimp-master/code/AssetLib/glTF/glTFAsset.h deleted file mode 100644 index 1a42e90..0000000 --- a/src/mesh/assimp-master/code/AssetLib/glTF/glTFAsset.h +++ /dev/null @@ -1,1017 +0,0 @@ -/* -Open Asset Import Library (assimp) ----------------------------------------------------------------------- - -Copyright (c) 2006-2022, assimp team - -All rights reserved. - -Redistribution and use of this software in source and binary forms, -with or without modification, are permitted provided that the -following conditions are met: - -* Redistributions of source code must retain the above -copyright notice, this list of conditions and the -following disclaimer. - -* Redistributions in binary form must reproduce the above -copyright notice, this list of conditions and the -following disclaimer in the documentation and/or other -materials provided with the distribution. - -* Neither the name of the assimp team, nor the names of its -contributors may be used to endorse or promote products -derived from this software without specific prior -written permission of the assimp team. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - ----------------------------------------------------------------------- -*/ - -/** @file glTFAsset.h - * Declares a glTF class to handle gltf/glb files - * - * glTF Extensions Support: - * KHR_binary_glTF: full - * KHR_materials_common: full - */ -#ifndef GLTFASSET_H_INC -#define GLTFASSET_H_INC - -#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_IMPORTER) - -#include "glTFCommon.h" -#include <assimp/Exceptional.h> -#include <algorithm> -#include <list> -#include <map> -#include <stdexcept> -#include <string> -#include <vector> - -// clang-format off - -#if (__GNUC__ == 8 && __GNUC_MINOR__ >= 0) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wclass-memaccess" -#endif - -#include <rapidjson/rapidjson.h> -#include <rapidjson/document.h> -#include <rapidjson/error/en.h> - -#if (__GNUC__ == 8 && __GNUC_MINOR__ >= 0) -#pragma GCC diagnostic pop -#endif - -#ifdef ASSIMP_API -# include <memory> -# include <assimp/DefaultIOSystem.h> -# include <assimp/ByteSwapper.h> -#else -# include <memory> -# define AI_SWAP4(p) -# define ai_assert -#endif - - -#if _MSC_VER > 1500 || (defined __GNUC___) -# define ASSIMP_GLTF_USE_UNORDERED_MULTIMAP -# else -# define gltf_unordered_map map -#endif - -#ifdef ASSIMP_GLTF_USE_UNORDERED_MULTIMAP -# include <unordered_map> -# if defined(_MSC_VER) && _MSC_VER <= 1600 -# define gltf_unordered_map tr1::unordered_map -# else -# define gltf_unordered_map unordered_map -# endif -#endif - -// clang-format on - -#include "AssetLib/glTF/glTFCommon.h" - -namespace glTF { - -using glTFCommon::IOStream; -using glTFCommon::IOSystem; -using glTFCommon::Nullable; -using glTFCommon::Ref; -using glTFCommon::shared_ptr; - -using rapidjson::Document; -using rapidjson::Value; - -class Asset; -class AssetWriter; - -struct BufferView; // here due to cross-reference -struct Texture; -struct Light; -struct Skin; - -using glTFCommon::mat4; -using glTFCommon::vec3; -using glTFCommon::vec4; - -//! Magic number for GLB files -#define AI_GLB_MAGIC_NUMBER "glTF" - -// clang-format off -#ifdef ASSIMP_API -# include <assimp/Compiler/pushpack1.h> -#endif -// clang-format on - -//! For the KHR_binary_glTF extension (binary .glb file) -//! 20-byte header (+ the JSON + a "body" data section) -struct GLB_Header { - uint8_t magic[4]; //!< Magic number: "glTF" - uint32_t version; //!< Version number (always 1 as of the last update) - uint32_t length; //!< Total length of the Binary glTF, including header, scene, and body, in bytes - uint32_t sceneLength; //!< Length, in bytes, of the glTF scene - uint32_t sceneFormat; //!< Specifies the format of the glTF scene (see the SceneFormat enum) -} PACK_STRUCT; - -// clang-format off -#ifdef ASSIMP_API -# include <assimp/Compiler/poppack1.h> -#endif -// clang-format on - -//! Values for the GLB_Header::sceneFormat field -enum SceneFormat { - SceneFormat_JSON = 0 -}; - -//! Values for the mesh primitive modes -enum PrimitiveMode { - PrimitiveMode_POINTS = 0, - PrimitiveMode_LINES = 1, - PrimitiveMode_LINE_LOOP = 2, - PrimitiveMode_LINE_STRIP = 3, - PrimitiveMode_TRIANGLES = 4, - PrimitiveMode_TRIANGLE_STRIP = 5, - PrimitiveMode_TRIANGLE_FAN = 6 -}; - -//! Values for the Accessor::componentType field -enum ComponentType { - ComponentType_BYTE = 5120, - ComponentType_UNSIGNED_BYTE = 5121, - ComponentType_SHORT = 5122, - ComponentType_UNSIGNED_SHORT = 5123, - ComponentType_UNSIGNED_INT = 5125, - ComponentType_FLOAT = 5126 -}; - -inline unsigned int ComponentTypeSize(ComponentType t) { - switch (t) { - case ComponentType_SHORT: - case ComponentType_UNSIGNED_SHORT: - return 2; - - case ComponentType_UNSIGNED_INT: - case ComponentType_FLOAT: - return 4; - - case ComponentType_BYTE: - case ComponentType_UNSIGNED_BYTE: - return 1; - default: - std::string err = "GLTF: Unsupported Component Type "; - err += std::to_string(t); - throw DeadlyImportError(err); - } -} - -//! Values for the BufferView::target field -enum BufferViewTarget { - BufferViewTarget_NONE = 0, - BufferViewTarget_ARRAY_BUFFER = 34962, - BufferViewTarget_ELEMENT_ARRAY_BUFFER = 34963 -}; - -//! Values for the Sampler::magFilter field -enum SamplerMagFilter { - SamplerMagFilter_Nearest = 9728, - SamplerMagFilter_Linear = 9729 -}; - -//! Values for the Sampler::minFilter field -enum SamplerMinFilter { - SamplerMinFilter_Nearest = 9728, - SamplerMinFilter_Linear = 9729, - SamplerMinFilter_Nearest_Mipmap_Nearest = 9984, - SamplerMinFilter_Linear_Mipmap_Nearest = 9985, - SamplerMinFilter_Nearest_Mipmap_Linear = 9986, - SamplerMinFilter_Linear_Mipmap_Linear = 9987 -}; - -//! Values for the Sampler::wrapS and Sampler::wrapT field -enum SamplerWrap { - SamplerWrap_Clamp_To_Edge = 33071, - SamplerWrap_Mirrored_Repeat = 33648, - SamplerWrap_Repeat = 10497 -}; - -//! Values for the Texture::format and Texture::internalFormat fields -enum TextureFormat { - TextureFormat_ALPHA = 6406, - TextureFormat_RGB = 6407, - TextureFormat_RGBA = 6408, - TextureFormat_LUMINANCE = 6409, - TextureFormat_LUMINANCE_ALPHA = 6410 -}; - -//! Values for the Texture::target field -enum TextureTarget { - TextureTarget_TEXTURE_2D = 3553 -}; - -//! Values for the Texture::type field -enum TextureType { - TextureType_UNSIGNED_BYTE = 5121, - TextureType_UNSIGNED_SHORT_5_6_5 = 33635, - TextureType_UNSIGNED_SHORT_4_4_4_4 = 32819, - TextureType_UNSIGNED_SHORT_5_5_5_1 = 32820 -}; - -//! Values for the Accessor::type field (helper class) -class AttribType { -public: - enum Value { SCALAR, - VEC2, - VEC3, - VEC4, - MAT2, - MAT3, - MAT4 - }; - - inline static Value FromString(const char *str) { - for (size_t i = 0; i < NUM_VALUES; ++i) { - if (strcmp(data<0>::infos[i].name, str) == 0) { - return static_cast<Value>(i); - } - } - return SCALAR; - } - - inline static const char *ToString(Value type) { - return data<0>::infos[static_cast<size_t>(type)].name; - } - - inline static unsigned int GetNumComponents(Value type) { - return data<0>::infos[static_cast<size_t>(type)].numComponents; - } - -private: - static const size_t NUM_VALUES = static_cast<size_t>(MAT4) + 1; - struct Info { - const char *name; - unsigned int numComponents; - }; - - template <int N> - struct data { - static const Info infos[NUM_VALUES]; - }; -}; - -// must match the order of the AttribTypeTraits::Value enum! -template <int N> -const AttribType::Info AttribType::data<N>::infos[AttribType::NUM_VALUES] = { - { "SCALAR", 1 }, - { "VEC2", 2 }, - { "VEC3", 3 }, - { "VEC4", 4 }, - { "MAT2", 4 }, - { "MAT3", 9 }, - { "MAT4", 16 } -}; - -//! Base class for all glTF top-level objects -struct Object { - std::string id; //!< The globally unique ID used to reference this object - std::string name; //!< The user-defined name of this object - - //! Objects marked as special are not exported (used to emulate the binary body buffer) - virtual bool IsSpecial() const { return false; } - - Object() = default; - virtual ~Object() {} - - //! Maps special IDs to another ID, where needed. Subclasses may override it (statically) - static const char *TranslateId(Asset & /*r*/, const char *id) { return id; } -}; - -// -// Classes for each glTF top-level object type -// - -//! A typed view into a BufferView. A BufferView contains raw binary data. -//! An accessor provides a typed view into a BufferView or a subset of a BufferView -//! similar to how WebGL's vertexAttribPointer() defines an attribute in a buffer. -struct Accessor : public Object { - Ref<BufferView> bufferView; //!< The ID of the bufferView. (required) - unsigned int byteOffset; //!< The offset relative to the start of the bufferView in bytes. (required) - unsigned int byteStride; //!< The stride, in bytes, between attributes referenced by this accessor. (default: 0) - ComponentType componentType; //!< The datatype of components in the attribute. (required) - unsigned int count; //!< The number of attributes referenced by this accessor. (required) - AttribType::Value type; //!< Specifies if the attribute is a scalar, vector, or matrix. (required) - std::vector<double> max; //!< Maximum value of each component in this attribute. - std::vector<double> min; //!< Minimum value of each component in this attribute. - - unsigned int GetNumComponents(); - unsigned int GetBytesPerComponent(); - unsigned int GetElementSize(); - - inline uint8_t *GetPointer(); - - template <class T> - bool ExtractData(T *&outData); - - void WriteData(size_t count, const void *src_buffer, size_t src_stride); - - //! Helper class to iterate the data - class Indexer { - friend struct Accessor; - - // This field is reported as not used, making it protectd is the easiest way to work around it without going to the bottom of what the problem is: - // ../code/glTF2/glTF2Asset.h:392:19: error: private field 'accessor' is not used [-Werror,-Wunused-private-field] - protected: - Accessor &accessor; - - private: - uint8_t *data; - size_t elemSize, stride; - - Indexer(Accessor &acc); - - public: - //! Accesses the i-th value as defined by the accessor - template <class T> - T GetValue(int i); - - //! Accesses the i-th value as defined by the accessor - inline unsigned int GetUInt(int i) { - return GetValue<unsigned int>(i); - } - - inline bool IsValid() const { - return data != 0; - } - }; - - inline Indexer GetIndexer() { - return Indexer(*this); - } - - Accessor() = default; - void Read(Value &obj, Asset &r); -}; - -//! A buffer points to binary geometry, animation, or skins. -struct Buffer : public Object { - /********************* Types *********************/ - enum Type { - Type_arraybuffer, - Type_text - }; - - /// @brief Descriptor of encoded region in "bufferView". - struct SEncodedRegion { - const size_t Offset; ///< Offset from begin of "bufferView" to encoded region, in bytes. - const size_t EncodedData_Length; ///< Size of encoded region, in bytes. - uint8_t *const DecodedData; ///< Cached encoded data. - const size_t DecodedData_Length; ///< Size of decoded region, in bytes. - const std::string ID; ///< ID of the region. - - /// @brief Constructor. - /// \param [in] pOffset - offset from begin of "bufferView" to encoded region, in bytes. - /// \param [in] pEncodedData_Length - size of encoded region, in bytes. - /// \param [in] pDecodedData - pointer to decoded data array. - /// \param [in] pDecodedData_Length - size of encoded region, in bytes. - /// \param [in] pID - ID of the region. - SEncodedRegion(const size_t pOffset, const size_t pEncodedData_Length, uint8_t *pDecodedData, const size_t pDecodedData_Length, const std::string &pID) : - Offset(pOffset), EncodedData_Length(pEncodedData_Length), DecodedData(pDecodedData), DecodedData_Length(pDecodedData_Length), ID(pID) {} - - /// Destructor. - ~SEncodedRegion() { delete[] DecodedData; } - }; - - /******************* Variables *******************/ - - size_t byteLength; //!< The length of the buffer in bytes. (default: 0) - - Type type; - - /// \var EncodedRegion_Current - /// Pointer to currently active encoded region. - /// Why not decoding all regions at once and not to set one buffer with decoded data? - /// Yes, why not? Even "accessor" point to decoded data. I mean that fields "byteOffset", "byteStride" and "count" has values which describes decoded - /// data array. But only in range of mesh while is active parameters from "compressedData". For another mesh accessors point to decoded data too. But - /// offset is counted for another regions is encoded. - /// Example. You have two meshes. For every of it you have 4 bytes of data. That data compressed to 2 bytes. So, you have buffer with encoded data: - /// M1_E0, M1_E1, M2_E0, M2_E1. - /// After decoding you'll get: - /// M1_D0, M1_D1, M1_D2, M1_D3, M2_D0, M2_D1, M2_D2, M2_D3. - /// "accessors" must to use values that point to decoded data - obviously. So, you'll expect "accessors" like - /// "accessor_0" : { byteOffset: 0, byteLength: 4}, "accessor_1" : { byteOffset: 4, byteLength: 4} - /// but in real life you'll get: - /// "accessor_0" : { byteOffset: 0, byteLength: 4}, "accessor_1" : { byteOffset: 2, byteLength: 4} - /// Yes, accessor of next mesh has offset and length which mean: current mesh data is decoded, all other data is encoded. - /// And when before you start to read data of current mesh (with encoded data ofcourse) you must decode region of "bufferView", after read finished - /// delete encoding mark. And after that you can repeat process: decode data of mesh, read, delete decoded data. - /// - /// Remark. Encoding all data at once is good in world with computers which do not has RAM limitation. So, you must use step by step encoding in - /// exporter and importer. And, thanks to such way, there is no need to load whole file into memory. - SEncodedRegion *EncodedRegion_Current; - -private: - shared_ptr<uint8_t> mData; //!< Pointer to the data - bool mIsSpecial; //!< Set to true for special cases (e.g. the body buffer) - size_t capacity = 0; //!< The capacity of the buffer in bytes. (default: 0) - /// \var EncodedRegion_List - /// List of encoded regions. - std::list<SEncodedRegion *> EncodedRegion_List; - - /******************* Functions *******************/ - -public: - Buffer(); - ~Buffer(); - - void Read(Value &obj, Asset &r); - - bool LoadFromStream(IOStream &stream, size_t length = 0, size_t baseOffset = 0); - - /// Mark region of "bufferView" as encoded. When data is request from such region then "bufferView" use decoded data. - /// \param [in] pOffset - offset from begin of "bufferView" to encoded region, in bytes. - /// \param [in] pEncodedData_Length - size of encoded region, in bytes. - /// \param [in] pDecodedData - pointer to decoded data array. - /// \param [in] pDecodedData_Length - size of encoded region, in bytes. - /// \param [in] pID - ID of the region. - void EncodedRegion_Mark(const size_t pOffset, const size_t pEncodedData_Length, uint8_t *pDecodedData, const size_t pDecodedData_Length, const std::string &pID); - - /// Select current encoded region by ID. \sa EncodedRegion_Current. - /// \param [in] pID - ID of the region. - void EncodedRegion_SetCurrent(const std::string &pID); - - /// Replace part of buffer data. Pay attention that function work with original array of data (\ref mData) not with encoded regions. - /// \param [in] pBufferData_Offset - index of first element in buffer from which new data will be placed. - /// \param [in] pBufferData_Count - count of bytes in buffer which will be replaced. - /// \param [in] pReplace_Data - pointer to array with new data for buffer. - /// \param [in] pReplace_Count - count of bytes in new data. - /// \return true - if successfully replaced, false if input arguments is out of range. - bool ReplaceData(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t *pReplace_Data, const size_t pReplace_Count); - - size_t AppendData(uint8_t *data, size_t length); - void Grow(size_t amount); - - uint8_t *GetPointer() { return mData.get(); } - - void MarkAsSpecial() { mIsSpecial = true; } - - bool IsSpecial() const { return mIsSpecial; } - - std::string GetURI() { return std::string(this->id) + ".bin"; } - - static const char *TranslateId(Asset &r, const char *id); -}; - -//! A view into a buffer generally representing a subset of the buffer. -struct BufferView : public Object { - Ref<Buffer> buffer; //! The ID of the buffer. (required) - size_t byteOffset; //! The offset into the buffer in bytes. (required) - size_t byteLength; //! The length of the bufferView in bytes. (default: 0) - - BufferViewTarget target; //! The target that the WebGL buffer should be bound to. - - void Read(Value &obj, Asset &r); -}; - -struct Camera : public Object { - enum Type { - Perspective, - Orthographic - }; - - Type type; - - union { - struct { - float aspectRatio; //!<The floating - point aspect ratio of the field of view. (0 = undefined = use the canvas one) - float yfov; //!<The floating - point vertical field of view in radians. (required) - float zfar; //!<The floating - point distance to the far clipping plane. (required) - float znear; //!< The floating - point distance to the near clipping plane. (required) - } perspective; - - struct { - float xmag; //! The floating-point horizontal magnification of the view. (required) - float ymag; //! The floating-point vertical magnification of the view. (required) - float zfar; //! The floating-point distance to the far clipping plane. (required) - float znear; //! The floating-point distance to the near clipping plane. (required) - } ortographic; - }; - - Camera() = default; - void Read(Value &obj, Asset &r); -}; - -//! Image data used to create a texture. -struct Image : public Object { - std::string uri; //! The uri of the image, that can be a file path, a data URI, etc.. (required) - Ref<BufferView> bufferView; - std::string mimeType; - int width, height; - -public: - Image(); - void Read(Value &obj, Asset &r); - inline bool HasData() const { return mDataLength > 0; } - inline size_t GetDataLength() const { return mDataLength; } - inline const uint8_t *GetData() const { return mData.get(); } - inline uint8_t *StealData(); - inline void SetData(uint8_t *data, size_t length, Asset &r); - -private: - std::unique_ptr<uint8_t[]> mData; - size_t mDataLength; -}; - -//! Holds a material property that can be a texture or a color -struct TexProperty { - Ref<Texture> texture; - vec4 color; -}; - -//! The material appearance of a primitive. -struct Material : public Object { - //Ref<Sampler> source; //!< The ID of the technique. - //std::gltf_unordered_map<std::string, std::string> values; //!< A dictionary object of parameter values. - - //! Techniques defined by KHR_materials_common - enum Technique { - Technique_undefined = 0, - Technique_BLINN, - Technique_PHONG, - Technique_LAMBERT, - Technique_CONSTANT - }; - - TexProperty ambient; - TexProperty diffuse; - TexProperty specular; - TexProperty emission; - - bool doubleSided; - bool transparent; - float transparency; - float shininess; - - Technique technique; - - Material() { SetDefaults(); } - void Read(Value &obj, Asset &r); - void SetDefaults(); -}; - -//! A set of primitives to be rendered. A node can contain one or more meshes. A node's transform places the mesh in the scene. -struct Mesh : public Object { - typedef std::vector<Ref<Accessor>> AccessorList; - - struct Primitive { - PrimitiveMode mode; - - struct Attributes { - AccessorList position, normal, texcoord, color, joint, jointmatrix, weight; - } attributes; - - Ref<Accessor> indices; - - Ref<Material> material; - }; - - /// \struct SExtension - /// Extension used for mesh. - struct SExtension { - /// \enum EType - /// Type of extension. - enum EType { -#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC - Compression_Open3DGC, ///< Compression of mesh data using Open3DGC algorithm. -#endif - - Unknown - }; - - EType Type; ///< Type of extension. - - /// \fn SExtension - /// Constructor. - /// \param [in] pType - type of extension. - SExtension(const EType pType) : - Type(pType) {} - - virtual ~SExtension() { - // empty - } - }; - -#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC - - /// \struct SCompression_Open3DGC - /// Compression of mesh data using Open3DGC algorithm. - struct SCompression_Open3DGC : public SExtension { - using SExtension::Type; - - std::string Buffer; ///< ID of "buffer" used for storing compressed data. - size_t Offset; ///< Offset in "bufferView" where compressed data are stored. - size_t Count; ///< Count of elements in compressed data. Is always equivalent to size in bytes: look comments for "Type" and "Component_Type". - bool Binary; ///< If true then "binary" mode is used for coding, if false - "ascii" mode. - size_t IndicesCount; ///< Count of indices in mesh. - size_t VerticesCount; ///< Count of vertices in mesh. - // AttribType::Value Type;///< Is always "SCALAR". - // ComponentType Component_Type;///< Is always "ComponentType_UNSIGNED_BYTE" (5121). - - /// \fn SCompression_Open3DGC - /// Constructor. - SCompression_Open3DGC() : - SExtension(Compression_Open3DGC) { - // empty - } - - virtual ~SCompression_Open3DGC() { - // empty - } - }; -#endif - - std::vector<Primitive> primitives; - std::list<SExtension *> Extension; ///< List of extensions used in mesh. - - Mesh() {} - - /// Destructor. - ~Mesh() { - for (std::list<SExtension *>::iterator it = Extension.begin(), it_end = Extension.end(); it != it_end; it++) { - delete *it; - }; - } - - /// @brief Get mesh data from JSON-object and place them to root asset. - /// \param [in] pJSON_Object - reference to pJSON-object from which data are read. - /// \param [out] pAsset_Root - reference to root asset where data will be stored. - void Read(Value &pJSON_Object, Asset &pAsset_Root); - -#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC - /// @brief Decode part of "buffer" which encoded with Open3DGC algorithm. - /// \param [in] pCompression_Open3DGC - reference to structure which describe encoded region. - /// \param [out] pAsset_Root - reference to root assed where data will be stored. - void Decode_O3DGC(const SCompression_Open3DGC &pCompression_Open3DGC, Asset &pAsset_Root); -#endif -}; - -struct Node : public Object { - std::vector<Ref<Node>> children; - std::vector<Ref<Mesh>> meshes; - - Nullable<mat4> matrix; - Nullable<vec3> translation; - Nullable<vec4> rotation; - Nullable<vec3> scale; - - Ref<Camera> camera; - Ref<Light> light; - - std::vector<Ref<Node>> skeletons; //!< The ID of skeleton nodes. Each of which is the root of a node hierarchy. - Ref<Skin> skin; //!< The ID of the skin referenced by this node. - std::string jointName; //!< Name used when this node is a joint in a skin. - - Ref<Node> parent; //!< This is not part of the glTF specification. Used as a helper. - - Node() {} - void Read(Value &obj, Asset &r); -}; - -struct Program : public Object { - Program() {} - void Read(Value &obj, Asset &r); -}; - -struct Sampler : public Object { - SamplerMagFilter magFilter; //!< The texture magnification filter. (required) - SamplerMinFilter minFilter; //!< The texture minification filter. (required) - SamplerWrap wrapS; //!< The texture wrapping in the S direction. (required) - SamplerWrap wrapT; //!< The texture wrapping in the T direction. (required) - - Sampler() = default; - void Read(Value &obj, Asset &r); - void SetDefaults(); -}; - -struct Scene : public Object { - std::vector<Ref<Node>> nodes; - - Scene() = default; - void Read(Value &obj, Asset &r); -}; - -struct Shader : public Object { - Shader() = default; - void Read(Value &obj, Asset &r); -}; - -struct Skin : public Object { - Nullable<mat4> bindShapeMatrix; //!< Floating-point 4x4 transformation matrix stored in column-major order. - Ref<Accessor> inverseBindMatrices; //!< The ID of the accessor containing the floating-point 4x4 inverse-bind matrices. - std::vector<Ref<Node>> jointNames; //!< Joint names of the joints (nodes with a jointName property) in this skin. - std::string name; //!< The user-defined name of this object. - - Skin() = default; - void Read(Value &obj, Asset &r); -}; - -struct Technique : public Object { - struct Parameters { - }; - - struct States { - }; - - struct Functions { - }; - - Technique() = default; - void Read(Value &obj, Asset &r); -}; - -//! A texture and its sampler. -struct Texture : public Object { - Ref<Sampler> sampler; //!< The ID of the sampler used by this texture. (required) - Ref<Image> source; //!< The ID of the image used by this texture. (required) - - Texture() = default; - void Read(Value &obj, Asset &r); -}; - -//! A light (from KHR_materials_common extension) -struct Light : public Object { - enum Type { - Type_undefined, - Type_ambient, - Type_directional, - Type_point, - Type_spot - }; - - Type type; - vec4 color; - float distance; - float constantAttenuation; - float linearAttenuation; - float quadraticAttenuation; - float falloffAngle; - float falloffExponent; - - Light() = default; - void Read(Value &obj, Asset &r); - void SetDefaults(); -}; - -struct Animation : public Object { - struct AnimSampler { - std::string id; //!< The ID of this sampler. - std::string input; //!< The ID of a parameter in this animation to use as key-frame input. - std::string interpolation; //!< Type of interpolation algorithm to use between key-frames. - std::string output; //!< The ID of a parameter in this animation to use as key-frame output. - }; - - struct AnimChannel { - std::string sampler; //!< The ID of one sampler present in the containing animation's samplers property. - - struct AnimTarget { - Ref<Node> id; //!< The ID of the node to animate. - std::string path; //!< The name of property of the node to animate ("translation", "rotation", or "scale"). - } target; - }; - - struct AnimParameters { - Ref<Accessor> TIME; //!< Accessor reference to a buffer storing a array of floating point scalar values. - Ref<Accessor> rotation; //!< Accessor reference to a buffer storing a array of four-component floating-point vectors. - Ref<Accessor> scale; //!< Accessor reference to a buffer storing a array of three-component floating-point vectors. - Ref<Accessor> translation; //!< Accessor reference to a buffer storing a array of three-component floating-point vectors. - }; - - std::vector<AnimChannel> Channels; //!< Connect the output values of the key-frame animation to a specific node in the hierarchy. - AnimParameters Parameters; //!< The samplers that interpolate between the key-frames. - std::vector<AnimSampler> Samplers; //!< The parameterized inputs representing the key-frame data. - - Animation() = default; - void Read(Value &obj, Asset &r); -}; - -//! Base class for LazyDict that acts as an interface -class LazyDictBase { -public: - virtual ~LazyDictBase() {} - - virtual void AttachToDocument(Document &doc) = 0; - virtual void DetachFromDocument() = 0; - -#if !defined(ASSIMP_BUILD_NO_EXPORT) - virtual void WriteObjects(AssetWriter &writer) = 0; -#endif -}; - -template <class T> -class LazyDict; - -//! (Implemented in glTFAssetWriter.h) -template <class T> -void WriteLazyDict(LazyDict<T> &d, AssetWriter &w); - -//! Manages lazy loading of the glTF top-level objects, and keeps a reference to them by ID -//! It is the owner the loaded objects, so when it is destroyed it also deletes them -template <class T> -class LazyDict : public LazyDictBase { - friend class Asset; - friend class AssetWriter; - - typedef typename std::gltf_unordered_map<std::string, unsigned int> Dict; - - std::vector<T *> mObjs; //! The read objects - Dict mObjsById; //! The read objects accessible by id - const char *mDictId; //! ID of the dictionary object - const char *mExtId; //! ID of the extension defining the dictionary - Value *mDict; //! JSON dictionary object - Asset &mAsset; //! The asset instance - - void AttachToDocument(Document &doc); - void DetachFromDocument(); - -#if !defined(ASSIMP_BUILD_NO_EXPORT) - void WriteObjects(AssetWriter &writer) { WriteLazyDict<T>(*this, writer); } -#endif - - Ref<T> Add(T *obj); - -public: - LazyDict(Asset &asset, const char *dictId, const char *extId = 0); - ~LazyDict(); - - Ref<T> Get(const char *id); - Ref<T> Get(unsigned int i); - Ref<T> Get(const std::string &pID) { return Get(pID.c_str()); } - - Ref<T> Create(const char *id); - Ref<T> Create(const std::string &id) { return Create(id.c_str()); } - - inline unsigned int Size() const { return unsigned(mObjs.size()); } - - inline T &operator[](size_t i) { return *mObjs[i]; } -}; - -struct AssetMetadata { - std::string copyright; //!< A copyright message suitable for display to credit the content creator. - std::string generator; //!< Tool that generated this glTF model.Useful for debugging. - bool premultipliedAlpha; //!< Specifies if the shaders were generated with premultiplied alpha. (default: false) - - struct { - std::string api; //!< Specifies the target rendering API (default: "WebGL") - std::string version; //!< Specifies the target rendering API (default: "1.0.3") - } profile; //!< Specifies the target rendering API and version, e.g., WebGL 1.0.3. (default: {}) - - std::string version; //!< The glTF format version (should be 1.0) - - void Read(Document &doc); - - AssetMetadata() : - premultipliedAlpha(false), version() { - } -}; - -// -// glTF Asset class -// - -//! Root object for a glTF asset -class Asset { - using IdMap = std::gltf_unordered_map<std::string, int>; - - template <class T> - friend class LazyDict; - friend struct Buffer; // To access OpenFile - friend class AssetWriter; - -private: - IOSystem *mIOSystem; - - std::string mCurrentAssetDir; - - size_t mSceneLength; - size_t mBodyOffset, mBodyLength; - - std::vector<LazyDictBase *> mDicts; - - IdMap mUsedIds; - - Ref<Buffer> mBodyBuffer; - - Asset(Asset &); - Asset &operator=(const Asset &); - -public: - //! Keeps info about the enabled extensions - struct Extensions { - bool KHR_binary_glTF; - bool KHR_materials_common; - - } extensionsUsed; - - AssetMetadata asset; - - // Dictionaries for each type of object - - LazyDict<Accessor> accessors; - LazyDict<Animation> animations; - LazyDict<Buffer> buffers; - LazyDict<BufferView> bufferViews; - LazyDict<Camera> cameras; - LazyDict<Image> images; - LazyDict<Material> materials; - LazyDict<Mesh> meshes; - LazyDict<Node> nodes; - LazyDict<Sampler> samplers; - LazyDict<Scene> scenes; - LazyDict<Skin> skins; - LazyDict<Texture> textures; - - LazyDict<Light> lights; // KHR_materials_common ext - - Ref<Scene> scene; - -public: - Asset(IOSystem *io = 0) : - mIOSystem(io), - asset(), - accessors(*this, "accessors"), - animations(*this, "animations"), - buffers(*this, "buffers"), - bufferViews(*this, "bufferViews"), - cameras(*this, "cameras"), - images(*this, "images"), - materials(*this, "materials"), - meshes(*this, "meshes"), - nodes(*this, "nodes"), - samplers(*this, "samplers"), - scenes(*this, "scenes"), - skins(*this, "skins"), - textures(*this, "textures"), - lights(*this, "lights", "KHR_materials_common") { - memset(&extensionsUsed, 0, sizeof(extensionsUsed)); - } - - //! Main function - void Load(const std::string &file, bool isBinary = false); - - //! Enables the "KHR_binary_glTF" extension on the asset - void SetAsBinary(); - - //! Search for an available name, starting from the given strings - std::string FindUniqueID(const std::string &str, const char *suffix); - - Ref<Buffer> GetBodyBuffer() { return mBodyBuffer; } - -private: - void ReadBinaryHeader(IOStream &stream); - - void ReadExtensionsUsed(Document &doc); - - IOStream *OpenFile(const std::string &path, const char *mode, bool absolute = false); -}; - -} // namespace glTF - -// Include the implementation of the methods -#include "glTFAsset.inl" - -#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER - -#endif // GLTFASSET_H_INC |